FastTunnel/FastTunnel

Health v2 · maintenance only

Adoption not part of the score

1700 stars · 340 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

FastTunnel is a high-performance, cross-platform intranet penetration (NAT traversal) tool written in C#/.NET that exposes local network services to the public internet. It supports remote access to intranet computers, custom domain access to internal web services, and port forwarding, and can also be used as an extensible framework via its NuGet package.

Use cases

• expose a local web server to the internet
• access my home computer remotely via SSH or RDP
• use a custom domain to reach an intranet site for WeChat development
• forward a port to reach internal MySQL or Redis
• reverse proxy services behind NAT without a public IP
• build a custom tunneling app on top of a penetration framework

When to choose

• you need a self-hosted ngrok/frp alternative
• you want domain-based access to multiple intranet web services
• you need a .NET-extensible tunneling framework
• you need cross-platform (Windows/Linux/Mac) tunneling

When to avoid

• you need P2P tunneling (not yet supported)
• you need a battle-tested solution for critical production traffic
• you prefer a tool with a large ecosystem and plugin marketplace

Facets

application · maturity active

proxy networking http-server security networking self-hosted developer-tools privacy cross-platform windows dotnet cli nat-traversal reverse-proxy port-forwarding tunnel intranet-penetration tcp-proxy http-proxy remote-access linux macos

Member repositories

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markdown · JSON · MCP: product_card(name="FastTunnel/FastTunnel")